ESTRO 2025 - Abstract Book

S571

Clinical - Breast

ESTRO 2025

Conclusion: While hypofractionated PrRT does not result in a significant difference in implant removal, it results in higher implant loss rates in BC patients undergoing immediate reconstruction, compared to PhRT. Although PrRT isn’t an absolute contraindication for immediate reconstruction, these patients should be informed of the complications risks when considering PrRT.

Keywords: Proton therapy, Reconstruction, Complications

References: 1. DeCesaris CM, Rice SR, Bentzen SM, et al. Quantification of acute skin toxicities in patients with breast cancer undergoing adjuvant proton versus photon radiation therapy: A single institutional experience. International Journal of Radiation Oncology - Biology - Physics. 2019 Apr;104(5):1084–90. 2. Naoum GE, Ioakeim MI, Shui AM, et al. Radiation modality (proton/photon), timing, and complication rates in patients with breast cancer receiving 2-stages expander/implant reconstruction. Practical Radiation Oncology. 2022 Nov;12(6):475–86. 3. Anderson JD, Hammond JB, Kosiorek HE, et al. Unplanned implant removal in locally advanced breast cancer. Breast J . 2021;27(5):466-71.

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Digital Poster PROMS and PREMS in Breast Cancer Radiotherapy: First Results Patricia Salgado González, Carlos Camacho Fuentes, Marta Perez Cobos, Ignacio Navarro Ruiz, Leticia Del Campo, Monica Barnes Hernández, Javier Luna Tirado Radiation Oncology, Hospital Fundación Jiménez Díaz, Madrid, Spain Purpose/Objective: To evaluate the frequency and evolution of symptoms associated with RT in breast cancer using PROMS and PREMS questionnaires. Material/Methods: The PROMS (baseline, during RT, at the end of treatment and at one month) and PREMS questionnaires of patients treated with RT for breast cancer between May/2023-March/2024 were analyzed. Results: Twenty-seven patients had the questionnaires activated, only 19 completed at least one PROMS questionnaire and only 11 completed all of them.